Question about Heating & Cooling
My carrier 58dxc is making a loud knocking noise and blowing out cold air. When I switch the thermostat to air the knocking stops and the unit works fine. It's only when I switch it to heat is when the knocking noise starts and the cold air comes out. Can anyone help.
If your turning on heat and the unit is knocking and blowing cold air, your compressor is having problems in heat mode, could be reversing valve. A tech is needed in your situation. Getting the prob fixed right away will save you dollars..
Posted on Dec 03, 2008
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Posted on Jan 02, 2017
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